Article

Semi-automatic the manual literature search for systematic reviews increases efficiency

Department for Evidence-based Medicine and Clinical Epidemiology, Danube University Krems, Krems, Austria.
Health Information & Libraries Journal (Impact Factor: 0.89). 03/2010; 27(1):22-7. DOI: 10.1111/j.1471-1842.2009.00865.x
Source: PubMed

ABSTRACT

To minimise retrieval bias, manual literature searches are a key part of the search process of any systematic review. Considering the need to have accurate information, valid results of the manual literature search are essential to ensure scientific standards; likewise efficient approaches that minimise the amount of personnel time required to conduct a manual literature search are of great interest.
The objective of this project was to determine the validity and efficiency of a new manual search method that utilises the scopus database.
We used the traditional manual search approach as the gold standard to determine the validity and efficiency of the proposed scopus method. Outcome measures included completeness of article detection and personnel time involved. Using both methods independently, we compared the results based on accuracy of the results, validity and time spent conducting the search, efficiency.
Regarding accuracy, the scopus method identified the same studies as the traditional approach indicating its validity. In terms of efficiency, using scopus led to a time saving of 62.5% compared with the traditional approach (3 h versus 8 h).
The scopus method can significantly improve the efficiency of manual searches and thus of systematic reviews.

Download full-text

Full-text

Available from: Gerald Gartlehner, Jan 09, 2015
  • Source
    • "However, this is also an important strategy for limiting the study's focus. Additionally, the use of manual or hand searches in the list of references in the reviews by Kay (2006), Enochsson and Rizza (2009), and Tondeur et al. (2012) can be considered time consuming, inefficient, and a unsystematic search technique, which offers little transparency (Chapman et al., 2010). "
    [Show abstract] [Hide abstract]
    ABSTRACT: This article is a literature review of online peer-reviewed empirical studies from 2000 to 2013 regarding the development of digital competence of student teachers in teacher education qualified to teach in the secondary school grade level. The purpose of the review is to showcase and establish knowledge about empirical research on ICT-training in teacher education, and contribute with an overview of approaches for researchers, teacher educators, and policymakers on how teacher education develop student teachers’ digital competence for the secondary school grade level. A total of 42 studies met the inclusion criteria and were included in the review. Based on a thematic analysis of the studies, including coding and categorization strategies, eight approaches were identified: collaboration, metacognition, blending, modeling, authentic learning, student-active learning, assessment, and bridging theory/practice gap. The approaches consider ways that teacher education programs promote student teachers’ digital competence, and educate them in professionally using ICT for their future use in school and classroom teaching in secondary education.
    Full-text · Article · Dec 2014
  • Source
    • "This is due to incomplete or absent electronic databases before 1990 and to a more precise manual search not based on keyword search but on studies abstracts and full-text articles. Used in combination, these methods help to ensure that all relevant literature is accounted for, therefore minimizing retrieval bias [57]. "
    [Show abstract] [Hide abstract]
    ABSTRACT: Background We systematically reviewed etiological factors of Kienböck’s disease (osteonecrosis of the lunate) discussed in the literature in order to examine the justification for including Kienböck’s disease (KD) in the European Listing of Occupational Diseases. Methods We searched the Ovid/Medline and the Cochrane Library for articles discussing the etiology of osteonecrosis of the lunate published since the first description of KD in 1910 and up until July 2012 in English, French or German. Literature was classified by the level of evidence presented, the etiopathological hypothesis discussed, and the author's conclusion about the role of the etiopathological hypothesis. The causal relationship between KD and hand-arm vibration was elucidated by the Bradford Hill criteria. Results A total of 220 references was found. Of the included 152 articles, 140 (92%) reached the evidence level IV (case series). The four most frequently discussed factors were negative ulnar variance (n=72; 47%), primary arterial ischemia of the lunate (n=63; 41%), trauma (n=63; 41%) and hand-arm vibration (n=53; 35%). The quality of the cohort studies on hand-arm vibration did not permit a meta-analysis to evaluate the strength of an association to KD. Evidence for the lack of consistency, plausibility and coherence of the 4 most frequently discussed etiopathologies was found. No evidence was found to support any of the nine Bradford Hill criteria for a causal relationship between KD and hand-arm vibration. Conclusions A systematic review of 220 articles on the etiopathology of KD and the application of the Bradford Hill criteria does not provide sufficient scientific evidence to confirm or refute a causal relationship between KD and hand-arm vibration. This currently suggests that, KD does not comply with the criteria of the International Labour Organization determining occupational diseases. However, research with a higher level of evidence is required to further determine if hand-arm vibration is a risk factor for KD.
    Full-text · Article · Nov 2012 · BMC Musculoskeletal Disorders
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Many micronutrients depend on a healthy stomach for absorption. Helicobacter pylori chronic gastritis may alter gastric physiology affecting homeostasis of vitamins and minerals. Systematic review to assess whether H. pylori infection is associated with reduced micronutrient levels (other than iron) in the plasma or gastric juice and whether low micronutrient levels are modified by eradication treatment. Medline was searched for relevant publications from inception to June 2010. Studies describing micronutrient levels in H. pylori-infected and not-infected adults and/or the effect of eradication treatment on micronutrient levels were included. Fifty-two publications were selected: 46 investigated the association between H. pylori infection and reduced micronutrient levels and 14 the effect of eradication treatment on micronutrient levels. Sixty-four studies investigated vitamins (23 ascorbic acid, four ß-carotene, 21 cobalamin, 11 folate, and five α-tocopherol) and 10 addressed minerals (one calcium, one copper, one magnesium, one phosphorus, three selenium, and three zinc). Pooled standardized mean differences in micronutrient levels showed positive associations with H. pylori infection for ascorbic acid (gastric juice, -1.087) and cobalamin (-0.744), and a positive effect of eradication treatment, which increased ascorbic acid in the gastric juice (-1.408) and serum cobalamin (-1.910). No significant association between infection and low folate levels was observed. Meta-analyses for other micronutrients were not performed owing to insufficient data. Meta-analyses indicate that H. pylori infection is associated with reduced levels of ascorbic acid and cobalamin, supported by the positive effect of eradication treatment. For other micronutrients, further studies are needed.
    Full-text · Article · Feb 2012 · Helicobacter
Show more